Piston ring for internal combustion engine



FIG. 1 is a perspective view of a piston ring for internal combustionengine of the claimed design;

FIG. 2 is a front elevational view of the piston ring for internalcombustion engine shown in FIG. 1;

FIG. 3 is a rear elevational view of the piston ring for internalcombustion engine shown in FIG. 1;

FIG. 4 is a left side elevational view of the piston ring for internalcombustion engine shown in FIG. 1;

FIG. 5 is a top plan view of the piston ring for internal combustionengine shown in FIG. 1;

FIG. 6 is a bottom plan view of the piston ring for internal combustionengine shown in FIG. 1;

FIG. 7 is a cross-sectional view of Section A-A′ of the piston ring forinternal combustion engine shown in FIG. 1;

FIG. 8 is an enlarged view of Portion C of the piston ring for internalcombustion engine shown in FIG. 7;

FIG. 9 is a cross-sectional view of Section B-B′ of the piston ring forinternal combustion engine shown in FIG. 1; and,

FIG. 10 is an enlarged view of Portion D of the piston ring for internalcombustion engine shown in FIG. 9.

The ornamental design which is claimed is shown in solid lines in thedrawings. The broken lines in the drawings are for illustrative purposesonly and form no part of the claimed design.

The right side elevational view of the piston ring for internalcombustion engine is a mirror image of the left side elevational view ofthe piston ring for internal combustion engine shown in FIG. 4.

CLAIM I claim the ornamental design for a piston ring for internalcombustion engine, as shown and described.